Have a 602 with 95 Chevy truck manifolds and Lobak mufflers...Bought a JDR Carb came with 73 jets main and secondary , way to rich ...The motor skipped...Went to chassis Dyno gained 40 hp dropped ten jet sizes different, squirter's and power valve....Fuel pressure is good a/f ratio is good a tad lean on idle...Just not running right doesn't pull change a/f mixture screws to fatten up idle and it skips...Guys i race against are running much richer ...Any suggestions would be greatly appreciated..
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